SELECT 
  product_id, 
  group_id 
FROM 
  cscart_product_variation_group_products 
WHERE 
  group_id IN (
    260, 
    258, 
    257, 
    190, 
    192, 
    259, 
    191, 
    194, 
    195, 
    255, 
    256, 
    140, 
    125, 
    139, 
    126, 
    128, 
    236, 
    124, 
    127, 
    254, 
    102, 
    143, 
    214, 
    204, 
    206, 
    133, 
    132, 
    131, 
    154, 
    248, 
    184, 
    235, 
    233, 
    187, 
    138, 
    189, 
    243, 
    134, 
    234, 
    142, 
    137, 
    150, 
    188, 
    183, 
    198, 
    35, 
    186, 
    185, 
    149, 
    205, 
    136, 
    237, 
    135, 
    123, 
    122, 
    180, 
    208, 
    224, 
    207, 
    218, 
    176, 
    181, 
    175, 
    223, 
    212, 
    174, 
    177, 
    217, 
    170, 
    211, 
    173, 
    216, 
    219, 
    167, 
    166, 
    210, 
    193, 
    148, 
    144, 
    156, 
    161, 
    165, 
    129, 
    158, 
    182, 
    160, 
    162, 
    159, 
    244, 
    164, 
    215, 
    157, 
    130, 
    145, 
    141, 
    220, 
    155, 
    213, 
    146, 
    147, 
    153, 
    179, 
    225, 
    228, 
    227, 
    168, 
    221, 
    171, 
    151, 
    152, 
    172, 
    226, 
    163, 
    209, 
    222, 
    178, 
    197, 
    230, 
    199, 
    196, 
    252, 
    240, 
    200, 
    201, 
    203, 
    241, 
    239
  )

Query time 0.00096

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "50.90"
    },
    "table": {
      "table_name": "cscart_product_variation_group_products",
      "access_type": "index",
      "possible_keys": [
        "idx_group_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "group_id"
      ],
      "key_length": "6",
      "rows_examined_per_scan": 501,
      "rows_produced_per_join": 468,
      "filtered": "93.41",
      "using_index": true,
      "cost_info": {
        "read_cost": "4.11",
        "eval_cost": "46.80",
        "prefix_cost": "50.91",
        "data_read_per_join": "7K"
      },
      "used_columns": [
        "product_id",
        "group_id"
      ],
      "attached_condition": "(`test_uchur_k`.`cscart_product_variation_group_products`.`group_id` in (260,258,257,190,192,259,191,194,195,255,256,140,125,139,126,128,236,124,127,254,102,143,214,204,206,133,132,131,154,248,184,235,233,187,138,189,243,134,234,142,137,150,188,183,198,35,186,185,149,205,136,237,135,123,122,180,208,224,207,218,176,181,175,223,212,174,177,217,170,211,173,216,219,167,166,210,193,148,144,156,161,165,129,158,182,160,162,159,244,164,215,157,130,145,141,220,155,213,146,147,153,179,225,228,227,168,221,171,151,152,172,226,163,209,222,178,197,230,199,196,252,240,200,201,203,241,239))"
    }
  }
}