query_id, future = async_cursor.execute ('''
select record
from hogehoge
''')
tmp = [[x.split('=', 1) for x in line[1:-1].split(', ')]for line in result['record'].values]
# データ中に", " が入ってるとキーなしカラムができてしまうので、弾く
tmp = [[col for col in line if len(col) == 2]for line in tmp]
dic = [dict(x) for x in tmp]
pd.DataFrame.from_dict(dic)