SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25038ac5eabc24ea3d01d8e37aea1b5396c5cf09a226cb1fa4fef2c017f38c6d' 
  AND token = 'blgwhGXTUqtGZuYpO5yXVK85/GTYJURsQjIVYtWfDxY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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