Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'df0d4f37c700e072e3ef3370f1d5fd9451734e7d26ba09a885ee78bff21b9426' 
  AND token = 'VTohsOEK2MRu4Hz6dUAGGaHTIF1ovNv5pJOsuxaVkIs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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