Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d9d27c502ee84445dc1dd0d9d600674cc31c2aa443e3b444b1615ac91cbd1e6' 
  AND token = 'SMEQVlbYKNdm3c5mxXprhdiv2+LjW2uiZ3JvffsFano=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00093

JSON explain

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