SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    7793, 7789, 7795, 7797, 7787, 7794, 7788, 
    7791, 7790, 7796, 7792
  )

Query time 0.00027

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": 11,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (7793,7789,7795,7797,7787,7794,7788,7791,7790,7796,7792)"
    }
  }
}