Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4afc3942140fcf0a21783e2e7f6039f7166fb608ccc78f8fb094c21b12705074' 
  AND token = 'P1iGXjpQGyrpcZS9s4BNW8EOYlMbO6FS4CRcZ6gmnr0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}