Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d1f9673828f6585b027be1b39dd156f5f373499c8a44a6bbf46292fc0b2bebf' 
  AND token = '3csmPnWwfUNwKoObitS3SMu0CBWDRERN/4IbkyuCfeA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}