UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '2Lt92Tg5CnkBs7gcPj9oUjGZbVCWo98KWB0UVBIy/L0=' 
WHERE 
  key_id = '81f3f17ce7c44994afa4b301df4b7ca20157ffb0bf0424a5a7db4a2926daff21' 
  AND (
    token = '2Lt92Tg5CnkBs7gcPj9oUjGZbVCWo98KWB0UVBIy/L0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )