SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '067722349e885d8b12623218ed0f9c374bea6db84b21148aed56e644ac770d2b' 
  AND token = 'ZuJvxtY3RIMxOmv63AyuPBw5B9HPa5aQ0cfhmHjT8ew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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