Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ecde50e263ca67ec19748a3fb9ced870afe14940d58f442d02fa9b069e6cd557' 
  AND token = '8zrQEHLDDXOjt1ujS6VGewiuUQ9ylhIIPNrQSfHNaCY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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