Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7887abd8be01d6c168f436890b192336cecbf6b5d82b046e16a0d3a6d44a2157' 
  AND token = 'SG8fiD28BrsjJTFl4imBD9rTp7ga5h3jNJ9HudhZQhI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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