SELECT 
  * 
FROM 
  jmj_product_feature_variants 
WHERE 
  variant_id IN (
    3231, 3246, 3247, 1389, 1390, 1392, 1394, 
    1396, 1398, 1401, 1407, 1409, 1411, 
    1425, 1436, 1441, 1445, 1446, 1447, 
    1449, 1450, 1451, 1454, 1455, 1456, 
    1457, 1458, 1459, 1477, 1478, 1479, 
    2103, 2107, 2112, 2113, 2114, 2116, 
    2118, 2123, 2127, 2133, 2135, 2137, 
    2150, 2151, 2153, 2155, 2176, 2180, 
    2181, 2182, 2183, 2194, 2196, 2197, 
    2201, 2203, 2205, 2207, 2208, 2209, 
    2211, 2224, 2229, 3153, 766
  )

Query time 0.00260

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "158.41"
    },
    "table": {
      "table_name": "jmj_product_feature_variants",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "variant_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 66,
      "rows_produced_per_join": 66,
      "filtered": "100.00",
      "index_condition": "(`jmj_test`.`jmj_product_feature_variants`.`variant_id` in (3231,3246,3247,1389,1390,1392,1394,1396,1398,1401,1407,1409,1411,1425,1436,1441,1445,1446,1447,1449,1450,1451,1454,1455,1456,1457,1458,1459,1477,1478,1479,2103,2107,2112,2113,2114,2116,2118,2123,2127,2133,2135,2137,2150,2151,2153,2155,2176,2180,2181,2182,2183,2194,2196,2197,2201,2203,2205,2207,2208,2209,2211,2224,2229,3153,766))",
      "cost_info": {
        "read_cost": "145.21",
        "eval_cost": "13.20",
        "prefix_cost": "158.41",
        "data_read_per_join": "102K"
      },
      "used_columns": [
        "variant_id",
        "feature_id",
        "url",
        "color",
        "position",
        "abt__ut2_color_style",
        "abt__ut2_multicolor"
      ]
    }
  }
}