Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aad39e4cb2d1782cbb1bbe888f74e3a1e5d4c58c738de4e366511825da038af7' 
  AND token = 'EfLabKEnSr4VwFU4Ouh04dke+Xj/vjFuRGqMT+EfDYI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}