Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4e6d41340f08859e74d92ba9654ebbad9c0586a722d1f1e8af805dbeb1f9bcfa' 
  AND token = 'FE0E54HgR28482IuySH/yarvgtcFKcciXu/wJ0ExQyA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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