Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '81b24656dbc09fd0e75e49734e1ef54d7aca6ce655defc572dd3e82b0046923c' 
  AND token = 'Qp/z2pSIvy8qhI9iV54hHr+/mtVIw4De4/kEQGUML7A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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