Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a9cae81d5c2d202d5e77f0d37a5f5041daca885946fd7c1f703ccfe19a51e750' 
  AND token = '/e54XckZaLnOZJn+xfd+YLEjXW9L+U7zEPzkhB7Tmcg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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