Sandbox

SELECT 
  v.feature_id, 
  v.value, 
  v.value_int, 
  v.variant_id, 
  f.feature_type, 
  fd.internal_name, 
  fd.description, 
  fd.prefix, 
  fd.suffix, 
  vd.variant, 
  f.parent_id, 
  f.position, 
  gf.position as gposition, 
  f.display_on_header, 
  f.display_on_catalog, 
  f.display_on_product, 
  f.feature_code, 
  f.purpose 
FROM 
  cscart_product_features as f 
  LEFT JOIN cscart_product_features_values as v ON v.feature_id = f.feature_id 
  LEFT JOIN cscart_product_features_descriptions as fd ON fd.feature_id = v.feature_id 
  AND fd.lang_code = 'en' 
  LEFT JOIN cscart_product_feature_variants fv ON fv.variant_id = v.variant_id 
  LEFT JOIN cscart_product_feature_variant_descriptions as vd ON vd.variant_id = fv.variant_id 
  AND vd.lang_code = 'en' 
  LEFT JOIN cscart_product_features as gf ON gf.feature_id = f.parent_id 
  AND gf.feature_type = 'G' 
WHERE 
  f.status IN ('A') 
  AND v.product_id = 248 
  AND f.display_on_catalog = 'Y' 
  AND (
    f.categories_path = '' 
    OR FIND_IN_SET(245, f.categories_path) 
    OR FIND_IN_SET(248, f.categories_path) 
    OR FIND_IN_SET(166, f.categories_path) 
    OR FIND_IN_SET(254, f.categories_path) 
    OR FIND_IN_SET(263, f.categories_path) 
    OR FIND_IN_SET(255, f.categories_path)
  ) 
  AND IF(
    f.parent_id, 
    (
      SELECT 
        status 
      FROM 
        cscart_product_features as df 
      WHERE 
        df.feature_id = f.parent_id
    ), 
    'A'
  ) IN ('A') 
  AND (
    v.variant_id != 0 
    OR (
      f.feature_type != 'C' 
      AND v.value != ''
    ) 
    OR (f.feature_type = 'C') 
    OR v.value_int != ''
  ) 
  AND v.lang_code = 'en' 
ORDER BY 
  fd.internal_name, 
  fv.position

Query time 0.00138

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "128.29"
    },
    "ordering_operation": {
      "using_temporary_table": true,
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "v",
            "access_type": "ref",
            "possible_keys": [
              "PRIMARY",
              "fl",
              "variant_id",
              "lang_code",
              "product_id",
              "fpl",
              "idx_product_feature_variant_id"
            ],
            "key": "product_id",
            "used_key_parts": [
              "product_id"
            ],
            "key_length": "3",
            "ref": [
              "const"
            ],
            "rows_examined_per_scan": 65,
            "rows_produced_per_join": 30,
            "filtered": "46.25",
            "cost_info": {
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              "eval_cost": "6.01",
              "prefix_cost": "78.00",
              "data_read_per_join": "23K"
            },
            "used_columns": [
              "feature_id",
              "product_id",
              "variant_id",
              "value",
              "value_int",
              "lang_code"
            ],
            "attached_condition": "((`danishecarter_latest`.`v`.`lang_code` = 'en') and (`danishecarter_latest`.`v`.`feature_id` is not null))"
          }
        },
        {
          "table": {
            "table_name": "f",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "status"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "feature_id"
            ],
            "key_length": "3",
            "ref": [
              "danishecarter_latest.v.feature_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 2,
            "filtered": "9.85",
            "cost_info": {
              "read_cost": "30.06",
              "eval_cost": "0.59",
              "prefix_cost": "114.07",
              "data_read_per_join": "3K"
            },
            "used_columns": [
              "feature_id",
              "feature_code",
              "purpose",
              "feature_type",
              "categories_path",
              "parent_id",
              "display_on_product",
              "display_on_catalog",
              "display_on_header",
              "status",
              "position"
            ],
            "attached_condition": "((`danishecarter_latest`.`f`.`status` = 'A') and (`danishecarter_latest`.`f`.`display_on_catalog` = 'Y') and ((`danishecarter_latest`.`f`.`categories_path` = '') or find_in_set(245,`danishecarter_latest`.`f`.`categories_path`) or find_in_set(248,`danishecarter_latest`.`f`.`categories_path`) or find_in_set(166,`danishecarter_latest`.`f`.`categories_path`) or find_in_set(254,`danishecarter_latest`.`f`.`categories_path`) or find_in_set(263,`danishecarter_latest`.`f`.`categories_path`) or find_in_set(255,`danishecarter_latest`.`f`.`categories_path`)) and (if(`danishecarter_latest`.`f`.`parent_id`,(/* select#2 */ select `danishecarter_latest`.`df`.`status` from `danishecarter_latest`.`cscart_product_features` `df` where (`danishecarter_latest`.`df`.`feature_id` = `danishecarter_latest`.`f`.`parent_id`)),'A') = 'A') and ((`danishecarter_latest`.`v`.`variant_id` <> 0) or ((`danishecarter_latest`.`f`.`feature_type` <> 'C') and (`danishecarter_latest`.`v`.`value` <> '')) or (`danishecarter_latest`.`f`.`feature_type` = 'C') or (`danishecarter_latest`.`v`.`value_int` <> '')))",
            "attached_subqueries": [
              {
                "dependent": true,
                "cacheable": false,
                "query_block": {
                  "select_id": 2,
                  "cost_info": {
                    "query_cost": "1.20"
                  },
                  "table": {
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                    "possible_keys": [
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                    "key": "PRIMARY",
                    "used_key_parts": [
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                    "key_length": "3",
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                    ],
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                      "data_read_per_join": "1K"
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                    "used_columns": [
                      "feature_id",
                      "status"
                    ]
                  }
                }
              }
            ]
          }
        },
        {
          "table": {
            "table_name": "fd",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "feature_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "danishecarter_latest.v.feature_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 2,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "2.96",
              "eval_cost": "0.59",
              "prefix_cost": "117.63",
              "data_read_per_join": "6K"
            },
            "used_columns": [
              "feature_id",
              "description",
              "internal_name",
              "prefix",
              "suffix",
              "lang_code"
            ]
          }
        },
        {
          "table": {
            "table_name": "fv",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id"
            ],
            "key_length": "3",
            "ref": [
              "danishecarter_latest.v.variant_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 2,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "2.96",
              "eval_cost": "0.59",
              "prefix_cost": "121.18",
              "data_read_per_join": "7K"
            },
            "used_columns": [
              "variant_id",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "vd",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "danishecarter_latest.fv.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 2,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "2.96",
              "eval_cost": "0.59",
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              "data_read_per_join": "8K"
            },
            "used_columns": [
              "variant_id",
              "variant",
              "lang_code"
            ]
          }
        },
        {
          "table": {
            "table_name": "gf",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
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              "feature_id"
            ],
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            ],
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              "data_read_per_join": "3K"
            },
            "used_columns": [
              "feature_id",
              "feature_type",
              "position"
            ],
            "attached_condition": "<if>(is_not_null_compl(gf), (`danishecarter_latest`.`gf`.`feature_type` = 'G'), true)"
          }
        }
      ]
    }
  }
}

Result

feature_id	value	variant_id	feature_type	internal_name	description	variant	parent_id	gposition	display_on_header	display_on_catalog	display_on_product	purpose
47	N	0	C	3D support	3D support		20	10	N	Y	Y	find_products
42		158	M	Accessories included	Accessories included	USB cable	40	50	N	Y	Y	find_products
42		157	M	Accessories included	Accessories included	HDMI cable	40	50	N	Y	Y	find_products
42		156	M	Accessories included	Accessories included	Headset	40	50	N	Y	Y	find_products
45		161	S	Colors	Colors	Black	40	50	N	Y	Y	find_products
32		148	M	Communications	Communications	Wi-Fi (802.11b/g/n)	30	40	N	Y	Y	find_products
32		149	M	Communications	Communications	Ethernet	30	40	N	Y	Y	find_products
44		160	M	Compatibility with console videogames	Compatibility with console videogames	Xbox One	40	50	N	Y	Y	find_products
41	yes, wireless	0	T	Controller included	Controller included		40	50	N	Y	Y	describe_product
29		144	S	CPU	CPU	8-core AMD	24	20	N	Y	Y	find_products
28		143	S	CPU speed	CPU speed	1.75 GHz	24	20	N	Y	Y	find_products
38	343x81x264 mm	0	T	Dimensions (W x H x D)	Dimensions (W x H x D)		37	100	N	Y	Y	describe_product
46	HDMI; complectation Kinect 2.0	0	T	Features	Features		40	50	N	Y	Y	describe_product
26		141	S	Graphics processor	Graphics processor	integrated AMD Radeon GPU	24	20	N	Y	Y	find_products
23		139	S	Hard drive	Hard drive	500 GB	20	10	Y	Y	Y	find_products
22	Y	0	C	HD support	HD support		20	10	N	Y	Y	find_products
31		147	M	Ports	Ports	optical audio output	30	40	N	Y	Y	find_products
31		146	M	Ports	Ports	USB x2	30	40	N	Y	Y	find_products
31		145	M	Ports	Ports	HDMI	30	40	N	Y	Y	find_products
25		140	S	RAM	RAM	8192 MB, DDR3	24	20	N	Y	Y	find_products
36		155	M	Supported formats	Supported formats	WMA	33	30	N	Y	Y	find_products
35		150	M	Supported storage devices	Supported storage devices	Blu-ray	33	30	N	Y	Y	find_products
35		153	M	Supported storage devices	Supported storage devices	DVD RW	33	30	N	Y	Y	find_products
35		152	M	Supported storage devices	Supported storage devices	DVD R	33	30	N	Y	Y	find_products
35		154	M	Supported storage devices	Supported storage devices	CD	33	30	N	Y	Y	find_products
35		151	M	Supported storage devices	Supported storage devices	DVD	33	30	N	Y	Y	find_products
27		142	S	System performance for floating point computation	System performance for floating point computation	1.23 TFLOPs	24	20	N	Y	Y	find_products
21		137	S	Type	Type	stationary	20	10	N	Y	Y	find_products
34	Y	0	C	Video playback	Video playback		33	30	N	Y	Y	find_products
43		159	S	Videogames storage	Videogames storage	BD (Blu-ray Disc)	40	50	N	Y	Y	find_products
39	3.62 kg	0	T	Weight	Weight		37	100	N	Y	Y	describe_product