Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e32de5f0af92969d9abfebe8fdb7215c2cc2a4b7809a3b2d49de3f9bb8273b4' 
  AND token = 'qVO6KbN1iyKosYhNamXYWsmv1y2IuZi17BzrLwFEh+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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