SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    61329, 61954, 62862, 62977, 64875, 64876, 
    64902, 64903, 64908, 64909, 65531, 
    65532, 65533
  )

Query time 0.00068

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,
      "attached_condition": "cscart_products.product_id in (61329,61954,62862,62977,64875,64876,64902,64903,64908,64909,65531,65532,65533)"
    }
  }
}

Result