Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee0b89d09e5a7ff63346421952e12457fd2a1e07d960778ca88b11f741462a21' 
  AND token = 'El7YEskaATRXaRXzCScGPtMkcjl1xaRz2p6SfxtF/Y8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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