Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1206adcde5067d27ea56066bcfb07253e4848b8b121fb932d9cbd918078f44ad' 
  AND token = 'BglE+sCzk6AdX1/WTHm9UQu7lQA6j8vqx6asQpcq1fg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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