Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a70372a49693e59b34ff28acb082f90ae1775cebf0db1feccb581f8a5b6d2dbb' 
  AND token = 'Uj89jesLZox7AgcsQJfPB1dYaREyE5ICNtXd6kwj6QI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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