Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00b5b95bee65f6858b6cbb120ff812107c23a1fe603065e3b0d6785113e4fed5' 
  AND token = 'YQLpWcK9ZX8oMmmICNZsT55K6wCdS0OAIbOgWa/6N6c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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