Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '16e1fcbdc03c003acedd64e2d64f8fc19b13b90c8a5e9e8577ed286ca0594d69' 
  AND token = 'Dp9ziBkyHKpOn7z8clRaVoYZsY9mkH7f0JA0t7QPXHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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