Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04cfd67e1671b746d3043022c3169608943cda277a05555bc92eba80d3ab6269' 
  AND token = 'x7EoY8ZIpVOnZlW/xEPapOXAW3LhLlXo6ACyMMP3Deo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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