SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a945965c2f2b6ed64b17c3698ab59fb87f20cbe3dcf7af4f0d7bb0880df37b53' 
  AND token = 'OgTvGgm43/LVcpThDxWyNCTAdj6WfOo1arzs1jDFkJI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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