UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'G5eDw5Txrn7kQmGlxLEBh564g0moQIPdYNgDtK18SKI=' 
WHERE 
  key_id = '4e6e489ad6049b71a090462a649c5ab15bfda76cf6a8eea5333f03599825b091' 
  AND (
    token = 'G5eDw5Txrn7kQmGlxLEBh564g0moQIPdYNgDtK18SKI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )