Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '968e03970af204c27a16ed3507f21e86d0c2122970bceb7a88b44ce9dde1eea1' 
  AND token = '7/1GKaSxvaCvlcaD45xOeb8y547Cg0Kn630qpl4qgmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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