SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4359e2238ebd30f74193194ce569c7c533df9c78cbb521cbd7ce14128fd10d6a' 
  AND token = 'hE/Aou9fvKriu+VLOGsHhnn0843AwAXoLBq0J8w9JQU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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