UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RTaM1h2W5ntqE5vGmqhAiMKsioSI8OuggD8CLowBVhE=' 
WHERE 
  key_id = '6b3ed9427fc153cdc204b6425506f59c4eaad2ba4e8f17f483a6d17f5a8e2b84' 
  AND (
    token = 'RTaM1h2W5ntqE5vGmqhAiMKsioSI8OuggD8CLowBVhE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )