Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b64d4e5c8e7da2cb3416d98e0adca81452befe1831a15060ad1658647581ca9' 
  AND token = '5Tn8cIXcoeOYlV61SFk3lI91+R4j1qy2zsiz3XSLOzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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