Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1594546c72b497a01698c028e03ee52b13381bbfc1b7781658e69a9dfbf9474d' 
  AND token = 'lA1OeJFbjWEHzMvCk5xnHYB7xpH/d9mcgDs08Ds0+TQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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