Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45141deeb9efc4950eb9166267e35f312bfc1fd5536029aeb6b5c68bc1a484f7' 
  AND token = 'fCy6FEwz/VBXPVWF/+D4rIn2YIY591Esvef108P9HjI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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