SELECT 
  f.feature_id, 
  f.purpose, 
  p.product_id, 
  p.parent_product_id, 
  g.id, 
  g.code 
FROM 
  cscart_product_variation_group_features AS f 
  INNER JOIN cscart_product_variation_groups AS g ON f.group_id = g.id 
  INNER JOIN cscart_product_variation_group_products AS p ON f.group_id = p.group_id 
WHERE 
  p.product_id IN (
    220173, 339556, 254330, 339744, 339676, 
    339576, 339461, 391686, 339748, 392163, 
    387088, 339667, 339645, 151062, 339684, 
    151100, 254331, 339583, 387086, 339588, 
    339708, 387055, 339826, 339454, 339547, 
    339553, 339633, 387090, 339580, 339548, 
    339657, 339777, 339632, 339649, 339711, 
    339743, 339719, 339647, 339716, 339773, 
    339776, 387065, 339474, 339756, 339745, 
    339471, 387054, 265037, 339577, 339848, 
    339666, 339552, 339665, 339669, 339767, 
    339670, 387066, 339833, 339698, 339703, 
    220171, 339557, 339544, 339646, 339651, 
    339749, 339824, 339455, 339628, 339591, 
    387052, 339784, 339549, 339565, 339673, 
    339614, 339789, 339575, 339662, 265040, 
    339595, 339834, 339853, 339653, 339658, 
    339818, 339626, 339631, 339717, 339852, 
    339559, 339470, 339545, 339487, 339542, 
    339822, 339579, 339567, 271697, 339850
  )

Query time 0.00121

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "430.18"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "p",
          "access_type": "range",
          "possible_keys": [
            "PRIMARY",
            "idx_group_id"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "rows_examined_per_scan": 100,
          "rows_produced_per_join": 100,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "120.12",
            "eval_cost": "20.00",
            "prefix_cost": "140.12",
            "data_read_per_join": "1K"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ],
          "attached_condition": "(`webmarco`.`p`.`product_id` in (220173,339556,254330,339744,339676,339576,339461,391686,339748,392163,387088,339667,339645,151062,339684,151100,254331,339583,387086,339588,339708,387055,339826,339454,339547,339553,339633,387090,339580,339548,339657,339777,339632,339649,339711,339743,339719,339647,339716,339773,339776,387065,339474,339756,339745,339471,387054,265037,339577,339848,339666,339552,339665,339669,339767,339670,387066,339833,339698,339703,220171,339557,339544,339646,339651,339749,339824,339455,339628,339591,387052,339784,339549,339565,339673,339614,339789,339575,339662,265040,339595,339834,339853,339653,339658,339818,339626,339631,339717,339852,339559,339470,339545,339487,339542,339822,339579,339567,271697,339850))"
        }
      },
      {
        "table": {
          "table_name": "g",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "id"
          ],
          "key_length": "3",
          "ref": [
            "webmarco.p.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 100,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "100.00",
            "eval_cost": "20.00",
            "prefix_cost": "260.12",
            "data_read_per_join": "39K"
          },
          "used_columns": [
            "id",
            "code"
          ]
        }
      },
      {
        "table": {
          "table_name": "f",
          "access_type": "ref",
          "possible_keys": [
            "idx_group_id"
          ],
          "key": "idx_group_id",
          "used_key_parts": [
            "group_id"
          ],
          "key_length": "3",
          "ref": [
            "webmarco.p.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 141,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "141.72",
            "eval_cost": "28.34",
            "prefix_cost": "430.18",
            "data_read_per_join": "14K"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      }
    ]
  }
}