Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '149b51efd98541af0032de35b75e5a8b3e9ca0ab4fde88f43c8281abcfefe071' 
  AND token = 'LedEQELQnOZp+93SlDoOqL1kTvndT6h3LeZR7OGnn1k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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