Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9cb2af4cb438537cfd40b2166f7cecc161aa5134b81517195a5863acf13f01a9' 
  AND token = 'epuC82nBPZKu1zB5IpN++RlsDos5OvRsNYUXi5KP/h4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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