Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c22738748ff79a292a6292caa62004578b635b9e094aebb5f88111dae9f75e6' 
  AND token = 'K0SWDXNPlfWy8LSSJHyvN2m31hoMqz6B44ft3N/EWt8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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