Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7dd0907816a0450a1eb5f28e77f9499e2285f8bef844e5ecf30deac9489d3640' 
  AND token = 'TefLZnSEWJzuWJQ/YlZWfdWOvqOuC63lNme2/L0APY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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