Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '561804ce8636544c5d19bd2e741a3cf7505bad9330379fa3a87eed16eee6081f' 
  AND token = 'aXoHyOMckKtoCAwZAlzdbz26vaq8n6aL020cB4YyMfY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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