Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe5cf2f9fb8e8e17c6b4a107425115b5ff87c29acddc1a147673e7e59f12c4be' 
  AND token = 'NMtpT52DUXBilWwX3jfGMahdslbnDJYCWGoBDcK6O7w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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