Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1582c13b8347d684455088a9f342b8b475be94de5fb1a83b46d03f083fbb28fb' 
  AND token = 'Ri3PFAVLNDv2j1Flgod9oiYMCJEdWmXDFMP9eGdXK0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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