Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92695a9edccd701d4b46d44ce338253d9a91d45abf3c3f6bcba688aea887677f' 
  AND token = 'Kce2KbqZgiqOgURYuRiGg4BYBUlx8kpOdq899Y7wlOU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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