Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd3b88d7b93ba4ffb50d1bbd6ee339b3cc944eb33ace848a51946c9bfb3ab202' 
  AND token = 'qqK1fTOW1FAWassQypa5eJBFZk0mqeUBRf0GQvLIbi4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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