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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '953e526061922ef4befa480eb33e37f0d8fb3772e3fbaadabb6a8c1d82c09b84' 
  AND token = 'xE8HX9irRQo0xmWzc4KIfGcmJd6/NxNM+w48O9GiG/M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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