Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d328d3908d69ff501d936f5980adbfd14e24dcedf090cd706b1c6711d4225cd' 
  AND token = '0sDNh1AKIYBt5iWinn/BfrfNhfYd8UjNKWgJJWm0EVM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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