Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2aa9c22482d6e7d42e565d9fba36c0c711d2bd876c011abc17658e41167abd76' 
  AND token = 'XKffK3JWXXhGxvInawDB3OXm5beTJpf9KPRLa9FkMms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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