Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af293ad21acceb6a350061d4f94816474894e22fe4be3203e69bd5f56d867e59' 
  AND token = 'PCa4qciZpube+CMvXfUvan/7HIRU1WgibRIO2nCqc0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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