Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbada5f271142344a1dd499fb24e652b53f9e32014b3ac0a91113b539f359339' 
  AND token = 'dXYTZXgNqdwRnU0CmPuGgXyBrO8eGkza8GonwL8hzDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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