Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f54d3f7c985e74039264c68d5dbd8a17b737222cfbc038ae744d10cb3492894c' 
  AND token = 'XTHnPox8Pu4jOU1N0RRohAB5bIbpIiLNyvgtWZE1ztg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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