Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a10739204ed8e70fd1e2c7629308e6e6de97b05b66f6995f9f35b30f1d72184e' 
  AND token = '9jqeFS8wd7dPrtk1KR5j5/Lqr0iwR0rrjgxfzS5Jj+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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