Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49c70c105bf5ea944caf564123689491b2d12f5e0d2e22b2629e7bd3845befae' 
  AND token = 'V7pYen6FSEPlC/NZC7+YwmaW583LRtn0JNjkefA2wPg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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