This is the 79th most frequent Czech word.
teď
"Teď" means "now" in English.
The word 'teď' is used here to indicate the present time in which an action occurs.
Teď se učím český jazyk.
I am learning Czech now.
'Teď' specifies that the event mentioned (the lunch break) is happening at this very moment.
Teď máme pauzu na oběd.
We have a lunch break now.
The addition of 'teď' to 'právě' emphasizes the immediacy of the action taking place, creating a sense of occurring at the precise current moment.