SELECT 
  cscart_product_feature_variants.variant_id, 
  cscart_product_feature_variants.position, 
  cscart_product_feature_variants.color, 
  cscart_product_feature_variant_descriptions.variant 
FROM 
  cscart_product_feature_variants 
  LEFT JOIN cscart_product_feature_variant_descriptions ON cscart_product_feature_variants.variant_id = cscart_product_feature_variant_descriptions.variant_id 
  AND cscart_product_feature_variant_descriptions.lang_code = 'de' 
WHERE 
  cscart_product_feature_variants.variant_id IN (
    14381, 10852, 12308, 12315, 12340, 12350, 
    12357, 12988, 13029, 13034, 13914, 
    13918, 13928, 13933, 13936, 14407, 
    10877, 12307, 12338, 13396, 14412, 
    14419, 11878, 12351, 14420, 13028, 
    13040, 10705, 10830, 12345, 10598, 
    10900, 12989, 13037, 13410, 13929, 
    10885, 14449, 10892, 12353, 13036, 
    14453, 13397, 10836, 12347, 14492
  ) 
ORDER BY 
  cscart_product_feature_variants.position ASC, 
  cscart_product_feature_variant_descriptions.variant ASC

Query time 0.00094

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "165.61"
    },
    "ordering_operation": {
      "using_temporary_table": true,
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_product_feature_variants",
            "access_type": "range",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id"
            ],
            "key_length": "3",
            "rows_examined_per_scan": 46,
            "rows_produced_per_join": 46,
            "filtered": "100.00",
            "index_condition": "(`danishecarter_latest`.`cscart_product_feature_variants`.`variant_id` in (14381,10852,12308,12315,12340,12350,12357,12988,13029,13034,13914,13918,13928,13933,13936,14407,10877,12307,12338,13396,14412,14419,11878,12351,14420,13028,13040,10705,10830,12345,10598,10900,12989,13037,13410,13929,10885,14449,10892,12353,13036,14453,13397,10836,12347,14492))",
            "cost_info": {
              "read_cost": "101.21",
              "eval_cost": "9.20",
              "prefix_cost": "110.41",
              "data_read_per_join": "121K"
            },
            "used_columns": [
              "variant_id",
              "color",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_product_feature_variant_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "danishecarter_latest.cscart_product_feature_variants.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 46,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "46.00",
              "eval_cost": "9.20",
              "prefix_cost": "165.61",
              "data_read_per_join": "139K"
            },
            "used_columns": [
              "variant_id",
              "variant",
              "lang_code"
            ]
          }
        }
      ]
    }
  }
}