public async Task Can_ExpireAt()
{
await RedisAsync.SetValueAsync("key", "val");
var unixNow = DateTime.Now.ToUnixTime();
var in2Secs = unixNow + 2;
await NativeAsync.ExpireAtAsync("key", in2Secs);
Assert.That(await RedisAsync.ContainsKeyAsync("key"), Is.True);
await Task.Delay(3000);
Assert.That(await RedisAsync.ContainsKeyAsync("key"), Is.False);
}