Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0d560e1f00334beb31e7a9bfc9ba38659d70eb1c9149b27a5c90c17dcbbc8a77' 
  AND token = 'S+HnNvK3GHWep7sQOez7ta1h/BXvrGK3MDfilvHlewE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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