SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc07088b6f4671fff848a89b62efd20aca054d02ae6752de0c82f1a6e2861215' 
  AND token = '7V4GC/cfpm9sKJQGw3BzU/hCUMHhNDZrd9CDKOg3HpI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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