Is it possible to speed up the query to the database (add indexes)?

Question

PostgreSQL

Hello.
T-ca:

id (uuid)
crash_id (uuid)
value (numeric)
date (timestamp)

Request

select crash_id, value, date FROM table1
where crash_id = any('{'856F1768-BBDC-4755-8256-080BFA8EB0BA'}')
and date > '[some date]'

Experimented with indexes, i.e. added CREATE INDEX some_pkey ON table1(crash_id , date)
but, something did not work out. Query Plan shows Seq Scan .
Is there any way to speed up the request?