Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c00513e2390edc88900dc43fbe0ec0ce37b400ca703de83c2dc08efff8921180' 
  AND token = 'eHhevV9iPEyABK3gjjOLcFRqjQbV/+jDbv2fcvfNKTY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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