Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2828b0625b3aa0b0d72fb1102937d6aa65b8efcf5e37101b5792135946a5536b' 
  AND token = 'I/e4dTpir+FQbJXCNxY7JUZGO9XZJCDootR/bpGcaS0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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