Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b25e4d5058a9918daff760468606a218d1636277426df39d162b318445e5d9f5' 
  AND token = 'GQF5heJYsj11tAkChijx+2t5tm0Wzpo6OLwts/O5UDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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