Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c46e7d80719a5063e02f801143d5b11bc51900a21444e27b1864723e699f023' 
  AND token = 'ygoK1/vPnggTa7FQDvObqQUKwSjCHOmNwToCKkWEm4c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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