Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cbd5189ef06fab57f017da042563d3ed8e3b076f3589b68bea83e2f91ea3acfd' 
  AND token = 'nvRjShOF/k4yskM6yxDtyYoz3ZzXLu4wkycuC9gIexY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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