Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '979ccd72845a7fc56148c7c7c5d12cbe6b7e711739578b259b75b2846ec873a4' 
  AND token = 'oE3DoOlDuFRq+vjbEipRTiO4dJ49TRTznDY++8g7Ux4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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