Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8607be4bad74ff2822724c2f33a514138f9aaa32bca2aaaf9b3052c215a5b022' 
  AND token = 'X17q7zRFgLNVbregSw26Favgt5QrBZcZQGQrKSlxyHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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