Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6be5a74946e6b224ed802c2b48f7a14e3d7535ed32a0638c78944c196a906061' 
  AND token = 'Hnao2GbcEj9CCdDWc1GBfPQGiVLdcdzc0kId7YYJ8OE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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