UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Ljg0Ofh1wZu5I1DjmjaV82teGfLfS2oYrbHhqvNuV64=' 
WHERE 
  key_id = '81a9112daf7d2f30e9234032cdeabcd4700f321982b25f4033a5921d956a52d2' 
  AND (
    token = 'Ljg0Ofh1wZu5I1DjmjaV82teGfLfS2oYrbHhqvNuV64=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )