I\'m looking for something similar to the MySQL ( SHOW INDEXES ). I was able to get a list of indexes using py2neo in Python
graphDB = neo4j.GraphDatabaseS
This doesn't quite answer your question (I +1'd jjaderberg's answer as well.)
In py2neo there is some functionality for labels: http://book.py2neo.org/en/latest/schema/
get_index(label) Fetch a list of indexed property keys for a label.
get_index(label)
FYI, in shell you can use the undocumented schema command.
schema