Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46f2b73c3d0f1cccea57f1dc0d412bdac5fe81cb61ac170e74564d43c1aa0eda' 
  AND token = 'uwDG9gWwic/EAkd40UtBDYCuHJOpyKxanVRKOTinyCs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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