Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08fee001dadbcac69e23705a10e6794b482fc23d57c4c1f3b6e5376237d54d04' 
  AND token = 'zum8kyhVTLrKij1WEydS97fDs+FcjFs9x2H3XpJVlrI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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