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 (
    10368, 14310, 10964, 12218, 12340, 12341, 
    12727, 12734, 12768, 13217, 13222, 
    14312, 14313, 14314, 14315, 14316, 
    14317, 13914, 13917, 13929, 13934, 
    13936, 13937, 13964, 12338, 13933, 
    9851, 10942, 13918, 10372, 9870, 10949, 
    12221, 12350, 12354, 12357, 12718, 
    12736, 13220, 13234, 13235, 13257, 
    14357, 13928, 14012, 10371, 11856, 
    11029, 12219, 12305, 12352, 12728, 
    13921, 10330, 10990, 12307, 12346, 
    12356, 12735, 12767, 12771, 13210, 
    13212, 13225, 13228, 13267, 14514, 
    14515, 13919, 13935, 10370, 9876, 10953, 
    14518, 13999
  ) 
ORDER BY 
  cscart_product_feature_variants.position ASC, 
  cscart_product_feature_variant_descriptions.variant ASC

Query time 0.00201

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "270.01"
    },
    "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": 75,
            "rows_produced_per_join": 75,
            "filtered": "100.00",
            "index_condition": "(`danishecarter_latest`.`cscart_product_feature_variants`.`variant_id` in (10368,14310,10964,12218,12340,12341,12727,12734,12768,13217,13222,14312,14313,14314,14315,14316,14317,13914,13917,13929,13934,13936,13937,13964,12338,13933,9851,10942,13918,10372,9870,10949,12221,12350,12354,12357,12718,12736,13220,13234,13235,13257,14357,13928,14012,10371,11856,11029,12219,12305,12352,12728,13921,10330,10990,12307,12346,12356,12735,12767,12771,13210,13212,13225,13228,13267,14514,14515,13919,13935,10370,9876,10953,14518,13999))",
            "cost_info": {
              "read_cost": "165.01",
              "eval_cost": "15.00",
              "prefix_cost": "180.01",
              "data_read_per_join": "198K"
            },
            "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": 75,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "75.00",
              "eval_cost": "15.00",
              "prefix_cost": "270.01",
              "data_read_per_join": "226K"
            },
            "used_columns": [
              "variant_id",
              "variant",
              "lang_code"
            ]
          }
        }
      ]
    }
  }
}