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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f9de1bdf8d8cfa7021cdf157425959fe6c444b182189ded69790c5310ecea798' 
  AND token = 'aenLeB6Z5clLTzVwV0hRBmDYWol5fgO23rFNXBMlGE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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