Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fd6fc37fc549a0af15360dc0f8eb773399ada8853ba8cfb25019ad835faafa0' 
  AND token = 'wjPBp/Bucc8rrxEs5/GWqJFm5725D2fsjY8nWa2drPw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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