Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05cd16b91a829c0bce98962f652078e2a6e6edb83fa8e921db26f8658ae2599c' 
  AND token = 'Mh6mZFbOhcl9bTYtho0Ym90C58S8o8I7+RkE3JGwI50=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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