Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92937b6617bc8a46d36ae9f195cb45b83d71277230faa9408d2975311395f056' 
  AND token = 'pk6zlWvyhvhektVIZTk5ubOwaP5IrBFn3t8qZ9u8qeo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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