Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d50e950676b49cb45773660060f48731493b6e7238a4a33eff88e1d31bbd380' 
  AND token = '62RrJY4coeu3792ZavU8ewfetvirzehhHn+oB0wQVUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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