if(context.Set<Table>()
                .Where(x => x.Year == model.Year && x.OrgId == _currentUser.OrgId)
                .Select(x => x.Approved).SingleOrDefault() != null)

public class Table
    {
        public short Year { get; set; }
        public Guid OrgId { get; set; }
        public DateTimeOffset? Approved { get; set; }
    }