SQL Insert committed but not found on next request?

Question

I have placed an after_commit callback in the RequestToken model that outputs "Committed Request Token xx". You can see in the log I included below, that the token record is committed and the next request the lookup on the object says it cannot be found. The issue occurs intermittently and if I refresh the page the record is found and the request goes through.

Environment AWS EC2 + RDS, Ubuntu 10.04, Rails 3.2.8, MySQL2 0.3.11 gem, apache2 2.2.14, phusion passenger 3.0.11

Has anyone seen this before? Any suggestions?

Committed Request Token S8j311QckvEjnDftNW0e7FPHsavGWTelONcsE3X1
  Rendered text template (0.0ms)
Completed 200 OK in 28ms (Views: 0.6ms | ActiveRecord: 21.8ms | Sphinx: 0.0ms)

Started GET "/oauth/authorize?oauth_token=S8j311QckvEjnDftNW0e7FPHsavGWTelONcsE3X1" for 96.236.148.63 at 2012-10-15 22:07:32 +0000
Processing by OauthController#authorize as HTML
  Parameters: {"oauth_token"=>"S8j311QckvEjnDftNW0e7FPHsavGWTelONcsE3X1"}
Completed 500 Internal Server Error in 5ms

ActiveRecord::RecordNotFound (Couldn't find RequestToken with token = S8j311QckvEjnDftNW0e7FPHsavGWTelONcsE3X1):

Answer 1

200 Doesn't mean it saved. Probably failed a validation.