Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f8467ebbab0e98e26830646c1f9ddf34f7eb81a093b8cc9aed89c0407a14801' 
  AND token = '69bX+MKXvd6pIfh9nYRA1x5JuYEvGcu3H1wAgiglTOQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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