Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb471b20e4ffc9856639fe6f2e310e52b7a579c742f62ebdbc9ce17d4220fbbe' 
  AND token = 'kpWqssSu9gdsCcaOtIgeqOhs3b2h8JRXWmvX2F4SM/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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