Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9384b9cee431c73c2ec3d1a415c96fc72d33aa903a453ff20722c518d3f84b7' 
  AND token = 'bxVs7OiayN3KA5VNZmOp0Dw2EEBcUfZVme7AZAxYjlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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