Try specifying the token explicity and not in the password store and see if you see any output to this command. It should look like this with the token:
/omd/sites/v200p24/share/check_mk/agents/special/agent_kubernetes '--token' 'blablablabla..bla' '--infos' 'nodes,services,ingresses,deployments,pods,endpoints,daemon_sets,stateful_sets,jobs' '--no-cert-check' '--api-server-endpoint' 'https://1.2.3.4 '--port' '443'