Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93dec35d835ce160dd695f126811822d6e5a050d102383c834c4cd7e05315b7e' 
  AND token = 'F7rbPGiRDDv4RSX+/TSUWM9QEw6pExTldY2VxHIPqdI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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