Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '038f1908e896ac63d5740e0acfdeaaff39ea4e7f9c43f373c3edb7e815296923' 
  AND token = 'v9SDV0HiFAyE1eSLYrUkgDNECrW8cTU5s8j1hDa3Fqw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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