Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '024ba7228c8e0b86799a9e93d244ca6a031a4977ad46daf5c61057649c41db6b' 
  AND token = 'DO1+hzfall5eijU5InACahvENx10evYzYlQbxCFKWh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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