SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bede2937e52998f6748d7e5656cd3164a9e871f2982b428a0650a5a7100e50b7' 
  AND token = '7YuUwGVH3+wSxv4/sMJm9+LYvAgEdBA+r4m2Fa+LER0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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