Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34756d39d99dfe28c5a787bbbd7c28834e5db13d59bfebe95dc2c7159cb3c592' 
  AND token = 'puVRPYZXByoO/98j0O/WkGYY8120h6I1cU5x9fq+lsE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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