SQLite python how to add multiple filters in SELECT

How can I add more than one filter in a sql SELECT? I would need three different filter/parameters for a sql SELECT. Currently I have one and it looks like that:

    conn = sqlite3.connect(SerienPlaner)
cur = conn.cursor()
query = """SELECT %s
       FROM TVShowData
       WHERE julianday(_Starttime) + (_RunningTime / 24.0 / 60.0) > julianday('now', 'localtime')
       %s
       ORDER BY _Starttime
       LIMIT 15"""
if category == __LS__(30116):
    filter = ""
    parameters = ()
else:
    filter = " AND WatchType = ?"
    parameters = (category,)

query = query % (','.join(properties), filter)
cur.execute(query, parameters)

I would like to add

if __series_in_db__:
    filter = " AND inDB = ?"
    parameters = (TRUE,)
else:
    filter = ""
    parameters = ()

and

if __firstaired__:
    filter = " AND neueEpisode = ?"
    parameters = %NEU%
else:
    filter = ""
    parameters = ()

__series_in_db__ and __firstaired__ are GUI-settings within the script... for __firstaired__ I would like fatchall where neueEpisode = NEU or FREE-TV NEU...