Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97de0b2ef9374b40f848af5b03b36c1f89922e0ad118ff423cc93bbf03cdc5db' 
  AND token = 'io5GTzmcYFbL1xIvJiTamqm3VP4KbulTZmkmWqB0XNs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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