State expiration in Flink

[Vasily Melnik]

Hi .
I'm a bit confused with this point in State TTL documentation:
" By default, expired values are explicitly removed on read, such as
ValueState#value, and periodically garbage collected in the background if
supported by the configured state backend. "
Does it mean, that  if i have only one event with specific key, it's state
will never be cleaned on TTL expiration cause of i will never call value
method for this key again?