Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ab669d5b47cfcef98fdb50b479a08530c43d7c4d6eabe2754040194db465efb9' 
  AND token = 'm/CAYHhil9dqHyxJwsJkToPvC5YWwFq5IfrEgkPtYUA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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