Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11eefd4b1bc4d0078e65d4de5ddf498e2ab8c28c35baf8c6b71d480c4d44c98a' 
  AND token = 'vzRTDodpz+dPydCUEtn45Ie+yAaRtivXEbHV4M21MZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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