Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fb4d57ed28aa3d08bd0d517d1e394a18d6e8317ac6482cffc5385286eef585a9' 
  AND token = 'MXkyGvhFpaUF5d4A/y7awArLnR5zZvFskU2xPwLwdSg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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