UPDATE 
  vi_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'vO5CiGom77UU7XpCXwMf/B1+t/BzkyqZXrXlmLEL/qs=' 
WHERE 
  key_id = '9c51493830bd959915cffae258883473882b7334f80bd76b2cc6609f80a4f03b' 
  AND (
    token = 'vO5CiGom77UU7XpCXwMf/B1+t/BzkyqZXrXlmLEL/qs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )