Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96231600a11e72443fd6c47899f9ab87d8981d38693dedf91d24e717e3c2eef8' 
  AND token = 'eEyoQhKrAAkAqtLU2E6n/V0odQBvCydDkbaEFuUbA2g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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