Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bfd872300ce9ac624ac754c5873b7dfc80171265f09bcaac9d3900c924ea8fa' 
  AND token = 'kcFcaXRocS4HfnuyedC99ZLGUzANpx0sB2RqHiM9dEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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