Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '60b164c7a2d44d6eb3a89e024ec4a90077c87ca71847dd0ce6389c64d0c5debe' 
  AND token = 'poaRg9kY+D9zUUDL5R9LVqrb2ekivXqqDRucYr+MyZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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