Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7546958b27d066e44d55c2515993fdc7b258e98602319da0af65e461c86963c5' 
  AND token = '9DACb83Xgx8dCymLvsi1d6N8ooHYfzbzzarXJmS74bI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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