Optimized using sequential table scan with limit

plan_optimized.md

QUERY PLAN
------------------------------------------------------------------------------
  Limit  (cost=0.00..13700.25 rows=100 width=915) (actual time=0.013..0.114 rows=100 loops=1)
    ->  Seq Scan on messages  (cost=0.00..4085414.08 rows=29820 width=915) (actual time=0.013..0.106 rows=100 loops=1)
          Filter: ((context -> 'involved_parties'::text) @> '[{"id": 1, "type": 1}]'::jsonb)
  Planning time: 0.058 ms
  Execution time: 0.135 ms