UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '3GcAZBcGo2lGdzwN2zWMI7v/YeTZEtKEtiydPXSqPK0=' 
WHERE 
  key_id = 'dfd0cd536a480362b045eb0dbf00d0f6e3aeb47b395bf3f2e5c4b50c3bd81ce2' 
  AND (
    token = '3GcAZBcGo2lGdzwN2zWMI7v/YeTZEtKEtiydPXSqPK0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )