UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = '5DQrc23XOBIu4Pzc9cNzU9Tv70xckRe8rUTbm8BWbfI=' 
WHERE 
  key_id = '6c27dc12e819df6b509f759934bc2f5c247e0def7d8831c7f0b38ebaf0549776' 
  AND (
    token = '5DQrc23XOBIu4Pzc9cNzU9Tv70xckRe8rUTbm8BWbfI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )