Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b8c999888c0045c2e441e2ecc81fbeaecfe18004be738acbf9ba8cfd7d2b7d4f' 
  AND token = 'hQgSXBMC2vuG45STlxP8fW/4G/rJ1sI5Rm5fqgYDEIs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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