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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65ce743c0e5f321bb07e632a3bc7939a792c7302e43492ed6b6c2c18ac20ea72' 
  AND token = 'ifw8NP6bzMpyRYsmtBS+WQI23jL+XF8d7F4Lj5rBNdI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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