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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aed9cef4dce48337fe833a236c4f9018c83759391c817c3221ab70e3c6d59fd7' 
  AND token = '/ei70pjn3I0eur4H17ZaA+rKwAUiaCqj133444P7pcc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00074

JSON explain

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