Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e43a3099ce3ac58a43c24d88e486add484173aa69910d4b4539832cbe805ec8c' 
  AND token = 'ZcyLL4TfmetZP4PreMRpWR2OmFAkBcZsVbo78SIh4g0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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