Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '724daf38fff686369848c06f093ccd97d2ed8fb47fdf057ced289851cf3a0c09' 
  AND token = 'kW3wCfmgtZ7RYxejCRUGLxNbTKd7QQ+iapELFFHP+RQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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