SELECT 
  * 
FROM 
  jmj_product_feature_variants 
WHERE 
  variant_id IN (
    3232, 3246, 3247, 934, 935, 937, 938, 
    939, 941, 942, 943, 944, 955, 959, 2103, 
    2104, 2105, 2109, 2111, 2112, 2113, 
    2114, 2116, 2128, 2129, 2131, 2135, 
    2139, 2143, 2154, 2166, 2167, 2178, 
    2183, 2184, 2185, 2186, 2187, 2188, 
    2190, 2195, 2196, 2201, 2204, 2205, 
    2207, 2213, 2222, 2223, 2231, 2232, 
    2233, 2235, 2239, 766
  )

Query time 0.00086

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "132.01"
    },
    "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": 55,
      "rows_produced_per_join": 55,
      "filtered": "100.00",
      "index_condition": "(`jmj_test`.`jmj_product_feature_variants`.`variant_id` in (3232,3246,3247,934,935,937,938,939,941,942,943,944,955,959,2103,2104,2105,2109,2111,2112,2113,2114,2116,2128,2129,2131,2135,2139,2143,2154,2166,2167,2178,2183,2184,2185,2186,2187,2188,2190,2195,2196,2201,2204,2205,2207,2213,2222,2223,2231,2232,2233,2235,2239,766))",
      "cost_info": {
        "read_cost": "121.01",
        "eval_cost": "11.00",
        "prefix_cost": "132.01",
        "data_read_per_join": "85K"
      },
      "used_columns": [
        "variant_id",
        "feature_id",
        "url",
        "color",
        "position",
        "abt__ut2_color_style",
        "abt__ut2_multicolor"
      ]
    }
  }
}