Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '382d123cde2abcaaa62ed4f21c23e515aec5d8c5ae8a5213087c0c3cb9d0f358' 
  AND token = 'UkUWdxo8URVFjnDSOdkTL5QleCpusZ+ZuSBKtRb0jko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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