Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9dd2f1ec64430b426ddfa68c346b5e459fdd00666b6a57e0fe1fe76935428bc' 
  AND token = 'OZU6kcO/1/4ihBjLSkv2ajviBJh0mwOtWztn7i2e/UI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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