Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '506a5a510d41c6ee6899b0cd2e7f4c1ae46023d84f526a1c7ebd451fbb930f38' 
  AND token = 'xXXLSYpH30e2xwTHyegvT5l8FxHE996iu3FX/liis0w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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