SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10808, 10809, 10810, 10811, 10812, 10827, 
    10828, 9839, 12702, 9841, 9848, 9840, 
    9844, 9843, 9846, 9845, 9860, 9859, 
    9858, 9857, 9852, 9861, 9862, 9847, 
    9863, 9856, 9855, 9838, 9849, 9850, 
    9853, 9842, 9851, 9854, 10263, 10264, 
    10265, 10266, 10267, 10268, 10269, 
    10270, 10271, 10272, 10273, 10478, 
    9883, 9901, 10493, 10485, 10476, 10479, 
    10494, 10492, 10468, 9903, 10487, 9899, 
    10473, 10486, 9881, 9896, 9892, 10481
  )

Query time 0.00126

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 64,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (10808,10809,10810,10811,10812,10827,10828,9839,12702,9841,9848,9840,9844,9843,9846,9845,9860,9859,9858,9857,9852,9861,9862,9847,9863,9856,9855,9838,9849,9850,9853,9842,9851,9854,10263,10264,10265,10266,10267,10268,10269,10270,10271,10272,10273,10478,9883,9901,10493,10485,10476,10479,10494,10492,10468,9903,10487,9899,10473,10486,9881,9896,9892,10481)"
    }
  }
}