Expirable UserDefaults for swift

Localstorage.swift

class Localstorage {
  static func setRecord(key: String, value: Any, duration: TimeInterval) {
        let expirationDate = Date().addingTimeInterval(duration);
        let expirationKey = key + "_expirable";
        let dict = [
            expirationKey: expirationDate,
            key: value
        ]
        
        UserDefaults.standard.set(dict, forKey: key);
    }
    
    static func getRecord(key: String) -> Any? {
        let expirationKey = key + "_expirable"
        guard let expirationObject = UserDefaults.standard.dictionary(forKey: key)
        else
        {
            return nil
        }
        
        let expirationDate = expirationObject[expirationKey] as! Date;
        
        if Date() > expirationDate { // checks if is before expiration
            UserDefaults.standard.removeObject(forKey: key)
            return nil;
        } else {
            return expirationObject[key]
        }
    }
}