Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c8825f413985651cf9ff47bdb94fd0abf4776cdb3b1555f6b0cccb0173e5086' 
  AND token = 'xdk8vyNsIqBWzcvaD4aovclnmjVqom4xbkBUguX7VbI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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