SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b16a9b066915068b384b9f083a789daf964610a97325dd1d04911a87a9dafb8d' 
  AND token = 'yAQFBI1kCpKOOiJ4BoEfhh03jx64O+BPBLiR33YzVwY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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