Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd710854f648b17c2a59f194d927c7f8ea44978af6cf08fbf5fc11e494d7966ff' 
  AND token = 'GAzI4y7xUnKIvqCtN5VpYExBWpQUIt+8NCxhcEp5MAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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