Is it possible to execute a CLTV transaction in bitoin core 0.11 console?
OP_CHECKTIMELOCKVERIFY is implemented as of Bitcoin Core 0.11.2.

This release supports a soft fork to enable CLTV (BIP 65).  CLTV is part of version 4 blocks.  Once 951 blocks are mined with version 4 blocks, then the soft fork is complete on only version 4 blocks are valid from this point on.

You will need to construct the CLTV transaction using other software.  Here is an example that requires bitcore (NodeJS):

https://github.com/mruddy/bip65-demos