Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62961b2ddc8595c5d530499c23c1f2e560f1288581d7f0f54bc0ea76db05ecae' 
  AND token = '/5olr2/b+uuor0wf/FgRFMN1KgG8P4QSEsJAud1Dnoo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}