Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ada224b23c2bbfbc902c7d49f425c352ca09891719f70596bd0d12f82ebb000f' 
  AND token = 'Nyga+cldkCD/5OCSeMZOPE3McnwYAQFqJ0ftIIZtj3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}