SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8531440c9a5bedb2d01cf483db96fe5225cf380fea589670064a7e3fbe520714' 
  AND token = 'hvKAKwJk7P9+EvdN9V4UX5F95Sy7OX95XQz9YE7VOLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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