UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6e81iSbnPyUGoqXermtWs3clW8NNe3Ji0q5Wn28YauI=' 
WHERE 
  key_id = 'c931ee8a402bcde3d77c8150155826fc6aab10196f54efa317b2842de4058681' 
  AND (
    token = '6e81iSbnPyUGoqXermtWs3clW8NNe3Ji0q5Wn28YauI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )