Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4493aa857b6c77190a0cba173e966cca81e6ed97b7a7289f59cedaf6a72816da' 
  AND token = '/mAsMUoyoUwxl20r4zsbINHWI4V13TxgnF6Y+IafKOI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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