Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9380c9e92ddd2d2acf48ede1562c0f0433d966249a6b82b031dea36ebdb55e5b' 
  AND token = 'PChi/6KnvzdGWmmMWyBQAvMClRpRCWwhF8aeCWUeCF8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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