SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '11afb8885944d39297bee455a83a7d4bde402706592e27cf141900d7dd986251' 
  AND token = 'ROu0jcwbh1PI4OamT+WaKeOYbV66NzgPeZZj9BJpffo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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