Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '55cfaebc405274056c76d55b8048b0302ef489adab70fc4c7781add5c4768164' 
  AND token = 'VQERZsQFHr1KXgsLPhsy38sCmAS4Dzs9WIg9G3fK4GA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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