def db(t):
    conn = MySQLdb.connect (host = "db",
                           user = "ed",
                           passwd = "ввв",
                           db = "ed")
    cursor = conn.cursor ()
    cursor.execute ("SELECT COUNT(*) FROM table where some < FROM_UNIXTIME(t)")
    row = cursor.fetchone ()
    print row[0]
    cursor.close ()
    conn.close ()

cursor.execute ("SELECT COUNT(*) FROM table where some < FROM_UNIXTIME({0})".format(t))

cursor.execute ("SELECT COUNT(*) FROM table where some < FROM_UNIXTIME(%s)" % t)