Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dcbf47af06af3da67f2d720827a07406c6c2843eff5221263236b4fdd04df288' 
  AND token = 'N5qWz84WN5lAYpPGEcDpRs1CrWnSu+zQo3lKKzojq60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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