Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66854bcec849ae2ec08a9cfd406bdbe408585ed3029bb32e3565ca1953dcd45d' 
  AND token = 'Lgj/Ym+NmaQmh3emvU4pG3egFoPoqBawI405MQKHv8M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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