Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a044a1f03ed95c67ff1adabb7a4dc7bc102720a49ed8720dac622cfffaf9c27' 
  AND token = 'p54HFljM52kvddWciFGLGqVbllw8aXpNCFxjvGBRAYc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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