Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e5e43d09f0009ffd2ef5d8ceba776eadd54dfc0ddd90054d2cc9690570dbde2' 
  AND token = 'GAx13K4jTMRInXnnxn5dU2hN58XyiUgkB4tm0IdOVAs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}