Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8ed1824f4eb856087745249fa85fdc7e5467e17719b3c37f7eb00cc9b50b1d60' 
  AND token = 'NKJrj/GeU79+hl6g5ivl0khozf45n5ZcZ98JK5L3kiM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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