Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '1a57f71c9a42d846f55669ab718f50fb6b767d8896ff88a5075d07616ceb36f7' 
  AND token = 'XM7bGfoCGqHq/feESs0gbZ2s2Bjdm04NEabFqYULDqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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