Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c96a581a5c04f3c11298d3b06e65bb6064af19bd0efd8e08b2b6f07bdd154934' 
  AND token = 'b2uWTxrxayXkifJdaDEOnyDsl3Mn5Duh8XK5L1ioOqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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