UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'TUSihvTbOdVb3wxHcV373hL+AG0z1rpEn1GdNPPs0lc=' 
WHERE 
  key_id = '51bf5897c3f97b84876769f014230dbddcfc6d1fb2e1c8f8a561b55344d03b3f' 
  AND (
    token = 'TUSihvTbOdVb3wxHcV373hL+AG0z1rpEn1GdNPPs0lc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )