Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82dde9e6db1fcb8f0eeddc9dc4c13bf7cfa27869104007f0ef27249f7a5a5acc' 
  AND token = 'is4objCHyAZt7S2uvHIQ45gPQxgjVfRcshWDZkhbHnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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