SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '966f6e0b5fb2b65eef46a2795aed374f4eecaf972dc357e7bcc9dc164035f6d2' 
  AND token = 'HGOZ3UT9jinpxKMEzSVV9GvJVKiDgs5h8rlt4w6oJS0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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