SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10037, 10038, 10039, 10040, 10043, 10044, 
    10045, 10046, 10047, 10048, 10050, 
    10051, 10052, 10054, 10055, 10056, 
    10057, 10058, 10059, 10060
  )

Query time 0.00064

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": 20,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (10037,10038,10039,10040,10043,10044,10045,10046,10047,10048,10050,10051,10052,10054,10055,10056,10057,10058,10059,10060)"
    }
  }
}