Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33534e9edb71b68cde4c6e32b3642ed09c8a785ba1df6e3883d85ce841e810f1' 
  AND token = 'dzodnfou7duX9naj6EYG/9PlqnGDIpcyyWg8oEzMXPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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