Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa110c56df37f694f4dac0e14f0f88624c5ffd93b7c99bf2fb85a453a55e70b3' 
  AND token = 'pAE3GaccY+auZw2pW7Scadaf+Oul70viCn/5YU+hY04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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