Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf0f8c7c9fa90d5f0839fabbdb7072d900d4990f5b133f49dfcc96ab64126a5d' 
  AND token = 'bmuAyhBAM2kcA2NDic8op2swRo5OY0jdqoslqWRv4Q4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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