Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7a664c377c510f3f8c23af11059f989b510ecaf72a8a792531e22b1fac3e217' 
  AND token = 'A3nSb4xJYCUUR+8PEOJLyPmRGQrEn/qOlgplTGlqSKE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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