API Basic Get ignores entity definition

Running a _civicrm_api3_basic_get() on an entity where the key and column name do not match fails. Values passed in via params are lost when SelectQuery->run() builds the where clause. The problem is in two parts:
_civicrm_api3_field_names (Utils:471) returns a numerically indexed array instead of maintaining the key hashes.
SelectQuery->run:229 Only checks to see if a param name matches a column name, rather than doing any sort of lookup, by default this wouldn't work because the entityFieldNames only contains the database column names.