Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05be3f62f6da8bbeb02b2dac17e7bc32f1f93d16b3b448cadbe0f5b2c429dae9' 
  AND token = 'PKVd1xHtbOkXuv3eR11UZG1R7UEzP3Q88C19OwzZAxs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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