Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'deabe3dd97cb8ecf52c002e0b28903606763295ca62627c88c81c27318f3d953' 
  AND token = 'gQ9JLS0XcQqu6C1gJmA6czBmd3h8R68Ka/pLSvt08Xo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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