Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '577ec14d8827457f4d9bd2f826b61bd30bebe351172bcf70d65b8e606b6bde34' 
  AND token = 'yFgH/qbZNC0vJ0M8nEHgpagv7UCXddmeiSWylniVCpM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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