Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f055ab71a81aacdd418583631b37df7c9b6ab7ff5bc669388912600791c342f' 
  AND token = 'Gse2S+i17tIG6v1ZKsWDF0TD2WwXobd0a5NOeAHRWl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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