Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0133dd83d7be89f24178ff0d5c893d8d86c0d1cfb7b2a3610995c37ae61556a2' 
  AND token = 'KNQySp6q9X1/sz/88lgTWv6Xo6NB9XKv35JCt+IKpNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}