Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '91543404d0a1b593f84be08a6ca3e9c32497d1dae15da44c470384dcb6392e1f' 
  AND token = 'nxCUBnlOBtOrpvjSRZafziXhXQAOCmrepnE1l/ylC4M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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