SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    5195, 4985, 5184, 5194, 5192, 5191, 5185, 
    5190, 5193, 5615, 7904, 7903, 7902
  )

Query time 0.00065

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": 13,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (5195,4985,5184,5194,5192,5191,5185,5190,5193,5615,7904,7903,7902)"
    }
  }
}