UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Yer8cGg6KhBPd9CNpp84MBL6g6wEqm8dghzIVWYSe24=' 
WHERE 
  key_id = '538562305b239692c228f8aebca0d46c525bc0acd72f08027717eb58d8d50dd6' 
  AND (
    token = 'Yer8cGg6KhBPd9CNpp84MBL6g6wEqm8dghzIVWYSe24=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )