Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b529332db091c2a1a67ec1d01d7696a1dd25384c0c069b66eb8f8805b2a3600c' 
  AND token = '1sWatsfFvuJrnEaKhg5eJDHacBKr0Ha4Epi0TyCrGbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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