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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60039340518c884476efa27f8a776f1402c9715d618081b47aa1eff6e5262f93' 
  AND token = '/8sly7iK+Vum5duoAaCSpWRooPxZnRDYkqOdQ9C+7+g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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