Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9e45244805f2324dc278a2819a46d57099f35e16b0fd4bc63316c14e0a3931b2' 
  AND token = 'puE958mFglH1lmB5yDUiwkfaJ8K4w6G9mymGkzuRT3Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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