Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42b4bf2ea79f811453eed892c0b6a65c91758b702450eb977f819368295c1737' 
  AND token = 'RqxNhI/JseWX/z/C2sg/GSxOk1LT4D/7F4paFbJehzI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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