Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '88954be22427f0b5163b73526612443df8b4ea75088814cdbfd5c41be940022d' 
  AND token = 'Qyqf9idA0DaBqgKw1VClTar/iN9pof4AfeJCSSY+M7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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