Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd25af7a03a3a79a0a2c03d557a34d530071b6ae47b74f5d63f5c44aba9a9be2c' 
  AND token = 'lytkHg71RCbJzyvKJA67MKyQ8egg3PXTHaFmieSEF08=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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