Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b2beff3f273d9837a80be047802cb67c430076c57da9ea5d301391f0187e87aa' 
  AND token = 'jj+1e2s6f/N8F/KskyBaR3ZxLqJ/gMdLtqC7OPrAXn4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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