Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1ee48e22213992f1b2a2c11c796bd8409c992c18ca64f8edc43a86024aad2be' 
  AND token = 'CP4zuPUWaKew7vzPjcx4y/wY2uy+T2ebLyx4egaIwWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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