Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bc58eb529c2d187c6be1a34c9e07fbde1f23821ecd584c71ef4719df5d77c6d' 
  AND token = 'J43XkGelyHL3CoZf6eONc1w/ZkELVA4HHD/cv6wWZQc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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