SELECT NOW();

qry.SQL.Add('SELECT CURRENT_TIMESTAMP AS ServerDateTime');
qry.Open;        
Result := qry.FieldByName('ServerDateTime').AsDateTime;

var
  hasil: TDateTime;
begin
  with ZQuery1 do
  begin
    Close;
    SQL.Text:='SELECT CURRENT_TIMESTAMP AS ServerDateTime';
    Open;
    hasil:=FieldByName('ServerDateTime').AsDateTime;
    ShowMessage(FormatDateTime('yyyy-mm-dd hh:mm:ss',hasil));
  end;
end;