Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16abdb69fb44397d9b5deebc838dc6564feca5dc09aa62ccca5c4e5d87c0bb11' 
  AND token = 'AwM39DxnfrJOfj8/h0rzWIVKHIjMNNyFMpI3QBorYe8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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