Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '4bf95450fe68af952c5211d88df52779c6e1ad2e0840602b79d11e94554e8cda' 
  AND token = 'O+PJeQJAUYycTcvR8XYNCT5rEqm9pIoHKFp9d6k3O+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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