UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PJVl2c82QaE3IbaIZpfIarvPz9wxWglhumCPQRSjYhA=' 
WHERE 
  key_id = '42234ba6decbd23a43d459e6f0f9f8d1f904076367c8a10e041c9b6072230914' 
  AND (
    token = 'PJVl2c82QaE3IbaIZpfIarvPz9wxWglhumCPQRSjYhA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )