Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c908c60924e073f89239a899a57c49018ebd9c03d9827c246486856e966d2d3c' 
  AND token = '7LNs4cGMCVWDrCC287ttAkPsR1wukXljha+K+6B8PRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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