Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5b9f7b24bc92bfc75afe169c616de57eae909d17efb77e1a4eab2d531d1ea8c4' 
  AND token = 'wa5YNFksLav7XlmMbjba2X9p7r7yUYg9uwxnq8rjxDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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