Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6666e6fe5f4b7f814fb038c012a8465cf26fcc91acfc123a3ded3f0994425b57' 
  AND token = 'lagpHtz7rifnu7d8n8XkjvY7HaB/foYZG27TNG0tRnI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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