Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e01e9ac7897d95f4b3aebce132e4e3de83ccc041512f8fb8dca1d9b61db7743a' 
  AND token = 'EMTQN3hv5yl3AJAMyifFIXTYqz46fre+9tFM1tZvuYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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