UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'qx/2VzT0pCWpcXQTiypmvjPtJlHP9XVKvSj2MvK8pDQ=' 
WHERE 
  key_id = '510520833b174707b7e67b3c478edb7b0ec3b7529049ddcfe9bc6855caa8ac33' 
  AND (
    token = 'qx/2VzT0pCWpcXQTiypmvjPtJlHP9XVKvSj2MvK8pDQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )