Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d9edd77c782eead07867219e75b22bed4516eb49e5bb407976fc2a624234d0d' 
  AND token = 'qz3ozPNXWGORlBi3URhEUn0auk38ujJxLSBuPMZM5wU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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