Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '53adcea07ff3e016d50a3d05a0c9b63520b629fd2f544c8f276cc573c0cd1bf8' 
  AND token = 'jGU5aWOUJlNzJHirQZNy3hgSJLfs+OiDXgAOJzRNMKE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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