Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a07fe0df6aefe3d2923b7676ea00db86a0f74319b8c1460282d5aa9c64f13445' 
  AND token = 'ThFIzUIJbXATiFGrBIuP5lvR93xBiJ62OGP4Tr8o+6A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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