Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32814eaef768cd051fefb4184903698d3953cf062db3e5455d9909063286131c' 
  AND token = 'U7YpV4Uy9obnXKRVaFZa3QBlSTZ96qS/nXHI/qai5n8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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