Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b9a85817b86b106b08fb28252d82ab5be33f36ca9ceca35297184f2652814f0' 
  AND token = 'Cutm4Ug4XFAr8XJ08loFWCdtPsHaMJlpsQ7bDs8JYng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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