Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf67be07bbbad2d089068adb455666bc24fa4c2bf12dc6e75184c801a5463d1e' 
  AND token = 'YMu19auio0hSUqT4bKtXtRKy6XY6XZHVdq0cUKjxfI8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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