Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3bc23eae73e151c97592e647a3d7cb723ef907e3f7cccf78d2f5604cbaacf165' 
  AND token = 'F7AS44T2LEJLpy8HfDIaC6MGy6XjCCv4JpVrrfT6UsQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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