Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffa7d7f70e952d98074ff8cfdeb9379044b802c2034b37b06c5c1931b3f97782' 
  AND token = '8KJhSs9vQIL3iuSz8je2KvJJo9esWYqbOERJ4vr9FCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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