Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c528584218dc8036e44f158b4d98cd0c13d05f7de15e75e9222fd731576b187' 
  AND token = 'aZXSSpwCZQdtvswzyou6r5V5pRUMBaryZM6atI1oU6w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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