Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '200e423a435bd2b261063cfbe3e551ed3c12104bdd23f46f8640b4690c9538ab' 
  AND token = 'QiuxiP+ifC6/LfiIJOI8hPn+xZzbZ+xdTxSzc+D35cY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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