Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bd6ca556dcbe4b9cc289195d3d773c17b4b8a459776cd87efb017692f2217fa' 
  AND token = 'fu/zQ11LH3IWP1h55iKiGcrzMOX5eGmi1VqWSpymAnk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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