Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9fc31598ffcdad6adcb2dcf76d7d245522750208535ba066e4e2aea1a6a32df3' 
  AND token = 'J4m0trAlX3I+NgP4v8q3l7w6N7KPEcUmCiGkReMdki0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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