Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd57f7acb117d0dc64855101acabc9e3e5a94cdf9bdacafbaaeedca68de2b8372' 
  AND token = 'NSbieSEHFApyjAQNbEaNkwxFVf9BVcENF7Joa+Q/+Xg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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