Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95f32d0d289118b770a9f6586a5b10f45d834e7e104376dab3f3e6b1ef0fc0b4' 
  AND token = '/i40cfWAHzD29q6CcGJ8fYLz6fcTT8+hL+fjBqxrEBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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