Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '593030bf4aaa0bb01c7449db0f391add54e121cda1e91d4ba2ee6e2b57c9a307' 
  AND token = 'qYkLZeHdabktoC0gZrAJ/gVKNFKSlic3Uno8rHGC1HA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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