Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e74a04d12b1ebb03e9d374428f7bae0172b5544530a6da6b7c136a801bb42af7' 
  AND token = 'Yy8yHQJqgcXbOdV4zQgkXfPsGciAGAW48va/kdqjros=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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