Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '985b8e2540946c29a1e6c286ff5156e118d860e16e495f4f2d9eb54e28fb7c4e' 
  AND token = 'ILHfyTcOFubtb+GTfsuTp5dypgmiZQHAurXB4s/5L3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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