SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10327, 10328, 10329, 10330, 10331, 10332, 
    10333, 10334, 10335, 10336, 10337, 
    10338, 10339, 10340, 10341, 10342, 
    10778, 10779, 10780, 10781, 10782, 
    10783, 10784, 10785, 10786, 10787, 
    10788, 10789, 10790, 10791, 9688, 10792
  )

Query time 0.00107

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": 32,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (10327,10328,10329,10330,10331,10332,10333,10334,10335,10336,10337,10338,10339,10340,10341,10342,10778,10779,10780,10781,10782,10783,10784,10785,10786,10787,10788,10789,10790,10791,9688,10792)"
    }
  }
}