Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0ca9e8f16eba618070fa9e1acef436ca3bbee568a6d0316289ddeac4cd04134' 
  AND token = 'lBVcGFMvz8kJW7Un4Tef/a4oovQOaS8F/RGggbHUnjw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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