UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'm8UDGXDWsiqxa1kaW5NXKckPO1OI6tAYIxMVcwYZslE=' 
WHERE 
  key_id = 'e98ec959f74dceb3264cf5c05bd034b18efa5e2a112997749b93464705105ada' 
  AND (
    token = 'm8UDGXDWsiqxa1kaW5NXKckPO1OI6tAYIxMVcwYZslE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )