Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a9705cec61cb8bcccc02c57a624dfabbc0f4f03ca9f7487f9e6edc6753d85bc' 
  AND token = 'EenvDBdIzBlGfehOjpgldCTldDg6IqEH03grVJPgsoA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00302

JSON explain

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