Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2abf83ec724e01f8fa4a578537980b95ef5295fcec22470b717cc2898ae6cafc' 
  AND token = 'VHclhKDR65kLf69RSk80KKGuFQvkOZCRVt7oxQ20SYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00093

JSON explain

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