Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2e5c35fb1636da21b565658cdfbf87ea2742d83834233cd3a169b81c15a6d74b' 
  AND token = 'lYSCjXLsHoJoWs3S8b45jxfT2B3p4CsTXZ/BrcRWeQw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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