Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba07d2503d77a06202024573ea14553e83c82bf9131076b9462bfe4572094305' 
  AND token = '1Sqclq9X1FUmowUG+j0rTTeLC+zzn52tv8rlbTb1LnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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