SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0885c8b505dd16ea78a512401acf9cddbf8fab6943c7c9b972d7923e553b0904' 
  AND token = 'N3vvj4x72Em2oNGYAq0D353GfZuGOSpQXTV7Wgr4Q/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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