use tick rather than epoch time

[zyxkad]

PLEASE READ THE GUIDELINES BEFORE MAKING A CONTRIBUTION

• Please check if the PR fulfills these requirements

• The commit message are well described
• Docs have been added / updated (for features or maybe bugs which were noted). If not, please update the needed documentation here. Feel free to remove this check if you don't need it
• All changes have fully been tested

• What kind of change does this PR introduce? (Bug fix, feature, ...)
  Bug fix

• What is the current behavior? (You can also link to an open issue here)
  If a tick delayed for too long, the chunk ticket will expired.

• What is the new behavior (if this is a feature change)?
  Use tick counter instead of epoch time, prevent when a single tick took too long

• Does this PR introduce a breaking change? (What changes might users need to make in their scripts due to this PR?)
  No

• Other information: