Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd983010f6a8fae69e00b90ef8dd204b7b42645776883a2c3acec7d08e1f83626' 
  AND token = 'e7dkZQ4GnKE6hNpQ1FzuI7xwFK+7Yv2s3QgL/ahf9vo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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