Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cd9e42eb6d88f6354738b8f77ea2eca130ae3d9a3de20daac3d007c283fcd0f2' 
  AND token = 'FF922hiqR6UfdBQPFO5YmJoRRO3WqUgHOyFgBBQYpYM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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