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 (
    18937, 18938, 18940, 18941, 18943, 18942, 
    18948, 19002, 19015, 19046, 19201, 
    19198, 19212, 19211, 19214, 19217, 
    19222, 19215, 19216, 19220, 19221, 
    19226, 19224, 19245, 19227, 19242, 
    19250, 23189, 19241, 23208, 23209, 
    19239, 19249, 19251, 19252, 19254, 
    23250, 23264, 19288, 23267, 23269, 
    23270, 23298, 23299, 23300, 23301, 
    23302, 23320, 19253, 23268, 23329, 
    23330, 23331, 23332, 23333, 23334, 
    23335, 23336, 23340, 23420, 23421, 
    23422, 23423, 23424
  ) 
ORDER BY 
  cscart_product_feature_variants.position ASC, 
  cscart_product_feature_variant_descriptions.variant ASC

Query time 0.00079

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "230.41"
    },
    "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": 64,
            "rows_produced_per_join": 64,
            "filtered": "100.00",
            "index_condition": "(`danishecarter_latest`.`cscart_product_feature_variants`.`variant_id` in (18937,18938,18940,18941,18943,18942,18948,19002,19015,19046,19201,19198,19212,19211,19214,19217,19222,19215,19216,19220,19221,19226,19224,19245,19227,19242,19250,23189,19241,23208,23209,19239,19249,19251,19252,19254,23250,23264,19288,23267,23269,23270,23298,23299,23300,23301,23302,23320,19253,23268,23329,23330,23331,23332,23333,23334,23335,23336,23340,23420,23421,23422,23423,23424))",
            "cost_info": {
              "read_cost": "140.81",
              "eval_cost": "12.80",
              "prefix_cost": "153.61",
              "data_read_per_join": "169K"
            },
            "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": 64,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "64.00",
              "eval_cost": "12.80",
              "prefix_cost": "230.41",
              "data_read_per_join": "193K"
            },
            "used_columns": [
              "variant_id",
              "variant",
              "lang_code"
            ]
          }
        }
      ]
    }
  }
}