Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e84366fed088ec39ba529bb77d332bc2e7f58371cb837d26526f04850082993' 
  AND token = 'tUE+TFdEdeDFjiZ1r3bIJu/WH9NJ9G7D4zg7patKO58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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