Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb8c25c13492ab4d69f48003afc43db4696e945ff8e0ccc67c0006b94114ca0a' 
  AND token = '0TiWFFyFUB1RCsW5vK9Y7nXWqO9BZSrCP5EKchYHoII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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