DB Error: already exists when trying to update Indices

I get below error when trying to update all indexes in CiviCRM table.

May 08 07:55:00 [info] $Fatal Error Details = Array
(
[callback] => Array
(
[0] => CRM_Core_Error
[1] => exceptionHandler
)

[code] => -5
[message] => DB Error: already exists
[mode] => 16
[debug_info] => CREATE INDEX index_all ON civicrm_prevnext_cache (cacheKey, entity_id1, entity_id2, entity_table, is_selected) [nativecode=1061 ** Duplicate key name 'index_all']
[type] => DB_Error
[user_info] => CREATE INDEX index_all ON civicrm_prevnext_cache (cacheKey, entity_id1, entity_id2, entity_table, is_selected) [nativecode=1061 ** Duplicate key name 'index_all']
[to_string] => [db_error: message="DB Error: already exists" code=-5 mode=callback callback=CRM_Core_Error::exceptionHandler prefix="" info="CREATE INDEX index_all ON civicrm_prevnext_cache (cacheKey, entity_id1, entity_id2, entity_table, is_selected) [nativecode=1061 ** Duplicate key name 'index_all']"]
)