Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae5070bd60b42b6d21849ff85fc6c2cba797413d40cde85815c6ba1d3900c93f' 
  AND token = 'LmJCYkW35Ru4/A8QABv9x/hsEafvAKBm1XMIa/MTWcg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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