Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faa1c6720c1c7bd9d7fe8085786cc0abbff0fb6c4c326dcc77eaeb0acdf92b3c' 
  AND token = 'elNKyPmv3klTXfHmTnrw9+XfHvycWmspceFlKAaK/5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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