Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '324adfc7bbc0bdf09c56d6307b2e806e57ba9367996ba49b97e41fd4928e0cf8' 
  AND token = 'A9LNKp+SBHsZ3XLunkKjX0ssnYhwouawiaX9wlA8Hog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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