Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '66d32816ca1c664632ba23ef68aea1311473d7514ae02b7f29255ddeeb748b45' 
  AND token = 'K4Ab8Hz8Suwu81MTPuTS3xxJkmIrXt4kPnq/2BpwJIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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