Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5086fff74cab219eebdf5e561de1db173e5ae46b583826def137b0dd3c598f6b' 
  AND token = 'CLInRS94mzvRV42FIwqwti0AUO8z4+7Krh23wlMdBLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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