Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd743bc4de6c3bdf56528dad712ae7d9b66288c651563a35576f4910a0f99926' 
  AND token = 'wz6/XhCsZUTQJwnurkCbrFq/d0gLaZEi2kHtoWb745A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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