Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dc210bbd8fdfbb59e890619b53827280692e867c6296ae9708e5fd7bb37faca' 
  AND token = 'Yzoa7Nu5iNP8B4OACUA0sns3zoKe+kDVgjZiH0Z4pL0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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