Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0b585510b8428cc06060efc765b2e898bffb9c870893041acb6c78e9ffe42cf' 
  AND token = 'WhnAqdjJv8qRMhwAH6fUoFG/odUAB3I2LohXYiLLr34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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