Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a36fdd50aa672afd560c2f2f8f783ab7b183cc586d1ff1fa8dd365f26e93f4a9' 
  AND token = '9b7QAUEufZbZUCKC8Xq2e6nXh5EGkiyn6eXfCurEmQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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