Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ce72b07d7e9790c8316f1e2fb30dc7db5c0ef6a9882b6f47ea0e4aea6120703' 
  AND token = 'xlHYpqDb3o9Vir3vYf0Oru3UUjsroa8y5C5xvt3yEXc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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