Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93b3e599876f56dc2d6e0382cfc1cfd9b1739a49143852bfdda2d9b864ef8e72' 
  AND token = 'E04iorqvuGuMMKaI90PeNCl/Lh2Iokj989ALwE+ifrY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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