Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec88070251382ff58877e1a74acd09f4592cc77337c1f6ccda48338959f0fe13' 
  AND token = 'ZJmC8p3PKiegq+CVqbVYc7jvOTdZ8vFqMSXdW829NRE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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