Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5aea9f557fff3c0abd3b00b7e506a3aa026f6cc3fe42e9491d63c1c577eafd6e' 
  AND token = 'FyldtcJztEDPSN0Bdjv5OJbXZpoB9Z1tyBqCccX2P6c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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