Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f80d2d5b953499f4ac82b5850ecfa3d94723c280c33335c92fc191713a7ee538' 
  AND token = 'HhpMkIKH9XEOXBMccxHPlO0C3RAfBDgDw58kZSsJ/Bc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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