Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dabdd46a0d8aca21a56b896bea7d60831dfb8731f3683058e2538cc08241abd9' 
  AND token = 'q9c6R4nQp3c+an9m4rmpAFdVEnAdiu8faVWLnwCvTOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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