Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1383e2c3205fef12641049851ce6a97dd4bdccacded85d257533c81cd6bc10e' 
  AND token = 'Jcj46T2thtzlTx1eUI367Ar8/QoFc2aJa9O5xcojGIY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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