Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce265695dd144bd49964562a9c6a06e82562fcece5ff13a4449d63ca24b249fb' 
  AND token = 'kXuCclSb14pRt8CHrqvyB+b3GtonZXfxA3nRNAey3fQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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