UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'qhDTxbByrWwumXSR/fstTDzScNsukDDtXvda7zMVSFQ=' 
WHERE 
  key_id = 'bfe52276341dccd7c59d1d66993ae41a7ad317ddbace9bb53fcf2427192a3402' 
  AND (
    token = 'qhDTxbByrWwumXSR/fstTDzScNsukDDtXvda7zMVSFQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )