Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '027a64ff042312ff4f489c0f9f366f0f9ee2f24b7db9cc1c3965bb405b3d6706' 
  AND token = '7iVYZNQrCsCnxzTJ3fksYXIBmm88yA3CKopMrpkOT0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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