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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '033ff367c5e9c43552aca0cbf2671602dd280230f5d9c0b9089b03d4527c4a3c' 
  AND token = 'Dicz9VvtDyCIrZB/w/p3G+1e6VnffKZ7J2eEtC8UJS0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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