Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7899ba67c555fec659ed0e2dcf5b341226a1700f0b44785d2068e35020a35f13' 
  AND token = 'ko8UiqITt9CqwXaeRcniyhinEj8U2yeQHsiZJ8wPqoI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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