SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '580915222626cfc487e94771789ac3fa0c03e7030913e47fa7b6aa0ca7fb5730' 
  AND token = 'gqZz6UwG7nO8nRm8V6jq5AfZTxIJEsS2gE/Tq4PdDnM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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