Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2efddf7f056ebf406c9435b6d03d18f859c32f542e304c2b129ef65862dc9c3e' 
  AND token = '3gBb1digZrSmjpp6/c0Z7GH6U0xKCFVn0ugbvM1/nJk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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