Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '007b92c95173503b3c50267241ff5991667826b8b4413b24d5ba96dad73be474' 
  AND token = 'qW+X9QDsu9Ot9INHuKeofpwrZPSyj6RH0CsCru4kU0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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