SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5c2a919ba8d54bafa4de46dfd74d15b5bd4679c8b573258175e26c2732a98970' 
  AND token = 'pXk9MIhBRWQgG+ynwU8cYyqvsqIQ6BOkZoReFHo0o+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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