Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9b30384c23d39f5fc01687f23b3ebe108609d71c92ef3e8aa5a6e4bd750a86c' 
  AND token = 'lHrpNSJN80BOc8ebvsscGpGNqhAeqn8HTk1dLjFfcVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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