Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '134bc0dc9857d40e96d90558e4f1b12cf74b2d70aa078bbed50852505990f880' 
  AND token = 'd5rFBvblGauPxoxX1U7HCemU++8ydPiafLN72zzbNn4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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