Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de5c1b29890b3a4b1d10c8ffc0eb2b36cf7efce2abcecc7935d828d0763f8258' 
  AND token = 'rahfzmw9ID3vZtI6/k++R0DVNwgtLhwDEiT1BBlsDac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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