This page seems to indicate you get checked baggage, regardless of the ticket type.
https://www.klm.com/travel/nl_en/pla...ions/index.htm
>Regardless of the ticket conditions, the benefits of your Flying Blue level apply. Elite and Elite Plus members can check in one extra piece of baggage (max. 23 kg), completely free of charge. Explorers get a EUR 10 discount on the baggage fee, if bought before check-in is opened. This goes for all ticket options.<