Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ae11d6777c7e51e26e909e2cdbf941214bc8251d046b654cd40d4b6814ea204' 
  AND token = 'RH5GD76g6qag6EKEq9Sb09EqNbXOYeCtOvohhxfbX70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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