Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a462de4baa06f98b1a6301daf658fcd5321047c17086a85db6138c3b360a110b' 
  AND token = '11DanoH2gELE7AAwxoOADAckh4tpKRfTimo7rIHT36o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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