Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6fea5e4e0f55e0d8a4255a52de4685fdeba65f485db801486807832fe3e7f650' 
  AND token = 'VvPyLXTpKhAh1v9T/XPDdir07RPGbFvrMn7QTYtPPnc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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