Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '764fbb186db3b68a77d3aa187cd76cc4afd7a04bdeafc2061fb8d8c728e2341d' 
  AND token = 'oqxZehJbZSqHfCCqYhXZX3v7ixDV5qxayAlDXtW7tHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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