Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '214aabcbebb7932a169f07b3fae37c2a2ecba212c5e03fded9fdec883f0bc452' 
  AND token = 'QDp0a7Q4tIb43P2q1BQd1U+UFU8X5nX/sJqyAyMYjk4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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