Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'cccdff1d2c38855f41b9d852dc2e1b7c5919a8639dfbb24ce6a19d367acddea9' 
  AND token = 'twP1M88DZB/OO8Nn09z2LXvU+ObobLBtTa7LOv24XbI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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