Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '12b41e89c7679387f5ded6f84782edf9161fb9968d0f6f5ccd4868734e18379e' 
  AND token = 'OdXRBlO0PtTgZ23ujSwuYKJMRFZ880r7igKiDawlsUQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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