UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'D6413s66XsSgyFO63SKdhjNE1W84qgIykI1jxK4EYXg=' 
WHERE 
  key_id = '47877b9da736273f494d05935ca43f0e5e424060ce28d0e4dfc7e83031e46fcf' 
  AND (
    token = 'D6413s66XsSgyFO63SKdhjNE1W84qgIykI1jxK4EYXg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )