Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1fcda0baf9c857c5d95a9558cbf2a9452cbe9e5585d47ac6d30590e020531ae' 
  AND token = 'mY3yYicEakCcEY+tI1F7vtaGVZcEj3ePnfup2o9yOdg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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