Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '585ce2de18e7f250826131442d1cd86a81c70f23ede0e081786e2e9dc79656e7' 
  AND token = 'GpfrEQ81RxcOi7+bm+Q07u/S2nCqp08Li16enp6gdz8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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