Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7631cd9e9d63309ae9d2b136954ffcd2ca89056c077a2cf6b1ef46118e87d6b1' 
  AND token = 'DIyOmbCpiaApkm8jWRtpBhBQBJIHZGbGwkTx7nUA03A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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