Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '586272a642a368deddc4cf932c8b218e366078a7e781a2cecaa6127e3b9c3eee' 
  AND token = 'zJEzeOpKWCNkd3DGOAEfHl0PetYNNXuy55M99Yv9uL8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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