Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63ff86143805c73dc9b88bac16c7f4c6661e461687859a15ab36abc6d8da3fb7' 
  AND token = 'NYrgAYz4WUZbx4cMah8cW55JvawBTieQzamvUcuVBuY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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