Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec898efb31001326cfa3afa3c681d5c3191000de46bc23e3c3b1a27ebccb3cbe' 
  AND token = 'N+DvLDRia+/xMycpJonqIxQTdbTNNQaJc361/yXSDRk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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