Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cad19c59f72fe8bda21a61157cdcd5186fd2459905ba4bd368c35df928353d05' 
  AND token = 'HLNs/ASSlutn3NW17wmvGXAI6x7mXeDHT8fKY5uyIJ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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