public void IsExpired29Minutes59Second()
        {
            // Arrange
            var token = new Token { CreateDate = DateTime.Now.AddSeconds(-1799) };
            var validator = new DatabaseTokenValidator(null);

            // Act 
            var actual = validator.IsExpired(token);

            // Assert
            Assert.IsFalse(actual);
        }
 internal bool IsExpired(Token token)
 {
     var span = DateTime.Now - token.CreateDate;
     return span.TotalSeconds > DefaultSecondsUntilTokenExpires;
 }