Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13bf3e3873ac5b41be5e8f185d3aaf526266d1ff4e548a62f189059438a9c69d' 
  AND token = 'fIo7hReG+qUu11mESc2/fCQ/SwH4oiPB6ehjDm4nM+8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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