Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6cbcc92e780b0e49f9f8a9357af4180309b71d49712806121f778d7b7987fc8c' 
  AND token = 'ZB0SnSU/rXgWFa9LNF+wBy1wFW/32kulcqqiJ6aOV0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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