Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1364737ca05b077528f79ca2a98cdc873475ed21415b3b9c76de28fc1628688b' 
  AND token = 'k+Bh1bWskUFSGdoloBxbYtTrnguhem6c1MhzPttHfTc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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