UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'DjXgr4STy6MutTfpKpaiQ7KrROuYVAy3mnVzw6WnCto=' 
WHERE 
  key_id = 'a3e7aa2cf1e366df5fb8fc74f1352895fcb39b75a09ea9c28094da786bbd6cf4' 
  AND (
    token = 'DjXgr4STy6MutTfpKpaiQ7KrROuYVAy3mnVzw6WnCto=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )