UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MjUFn5SnBeGUraQyaxlvpDLZPQEqEnu7mFklCahqN3k=' 
WHERE 
  key_id = '836c6568967b6e93abef7b954b38e502db6eee54225aa8bea7533cc334ef0530' 
  AND (
    token = 'MjUFn5SnBeGUraQyaxlvpDLZPQEqEnu7mFklCahqN3k=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )