Cron do schedule but never execute

CREATE EXTENSION IF NOT EXISTS pg_cron;

GRANT usage ON SCHEMA cron TO postgres;
GRANT all privileges ON ALL TABLES IN SCHEMA cron TO postgres;

SELECT cron.schedule(
    'job_in_1_minutes',
    TO_CHAR(NOW() + interval '1 minutes', 'MI HH24 DD MM') || ' *',
    $$SELECT now()$$ 
);


SELECT cron.schedule(
    'job_in_2_minutes',
    TO_CHAR(NOW() + interval '2 minutes', 'MI HH24 DD MM') || ' *',
    $$SELECT now()$$ 
);


SELECT cron.schedule(
    'job_in_5_minutes',
    TO_CHAR(NOW() + interval '5 minutes', 'MI HH24 DD MM') || ' *',
    $$SELECT now()$$  
);