After more research I found the IFeatureDefinitionProvider

Where we can get all the features and then search for the Desired Filter in the EnabledFor field.

var featureDefinitions = featureDefinitionProvider.GetAllFeatureDefinitionsAsync();
await foreach (var feature in featureDefinitions)
{
    // Lookup for a filter with desired name
    if (feature.EnabledFor.Any(filters => filters.Name == "FeatureForSpecificUser"))
    {
       // do something
    }
}