Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9aa909413c28d21edaa70ed47024624c2aa33b854c945089a9e3fab82f82f86d' 
  AND token = 'xAkIhdW15rZxgTCxeESi/pqPdLfTIMwxL8xLWFpYoV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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