Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '14bcc8501a28fc4763f2928d6da456ffc298a7712ee5da70495c1ea5d251fec0' 
  AND token = 'xtKLd9VEkvE6iDahMcr7PDBYRSQX7ITQ/PafcaKogMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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