Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbf1b07ae5ecbf5e231db342a284076f89d3c203ac3d6167437838858e5c2003' 
  AND token = 'tA/JWgpscbRAE2DJ8olgDNQemjuH6FVYSnrWlyRAQTY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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