Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faa25b5e6c8cf20d0895644ab11f8446d8a0debc5623a3277780d72f5a9ba9d7' 
  AND token = '+9y2jBkaz85cYea3N6wg2mKYLSreXmVyI1YB4839IT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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