Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '966a07a2999150ccd63ffe7764632c966cdec90e9505dff29b4cd3a635f4550a' 
  AND token = '4Muz5jUmIa8C0E2Ih7stMue4mqV4dJytUrBsVHIVD7c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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