Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17cd061e9a1636adb75146b88d5ae86e6651092d97e3244b53ab03e9c85057ff' 
  AND token = 'I56AIEZuHeiU7t+GksxKEdYh6piBBP8YOAFRiz8JzWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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