Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0d93e8360883c830de235763c8dfa1e5c47503b697c723874920eafb39f25be' 
  AND token = 'YOjx3N4WlunIUTjMUEGtxIzUKI45wkVExto2eYoOlLg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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