Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dcb43d94fd1df3e34e9c34223d7b6835eb179d7cae8a12a35e8d03b9019d8fd5' 
  AND token = 'lt+xemvORapbeeQBxHCFy0AaQeMXmxDPSOxRnciIyx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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