Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4ec55acdd9855bfedf3eb2624e4747255dbc83364900203125cfef76535aaf9f' 
  AND token = 'nyXEdMo2QRvemVuwQG8TmOUiXT/PgDZ3H8GH/ofNeZ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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