Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a7efb0cbb8cbe3492697d68bc2dd29ff9af5a88cc0b9efadb50681f1dd77a81' 
  AND token = 'kiXWlhsnhOCfjf6h+lj8WBPjAO+bv+uW8cTBDdIfw9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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