Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cda297edd987dc0f4aaf7125c3c6b536ea43e1d51e35ee79e2cf0b587a883266' 
  AND token = 'eowZNHNPO68xDI44pY6a2nOQttIAvgOV88NUTK+v9ow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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