Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44eaf1c8dfe40c451a71d10b31f26e21b9fe3db3794033c7a491a80094894090' 
  AND token = 'Z7YOzQoJuloFBANA5z5DEoP9iV1Wt0vih1zLfu4V58M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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