Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6dde5ec7391af857cf157cde5b008b5b4e4685cf05a4f09f0cf49b94b6df4743' 
  AND token = '98Ax2orhO057MqsnR4lax7dxid0kHMJWQpPQhWT95AI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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